Deposits and prospects used to assess undiscovered copper resources (with reported mineral hessite)
| Site name | Country | State or province | Development |
|---|---|---|---|
| Herzogenhugel | Belgium | Wallonne | Prospect |
| Elatsite | Bulgaria | Sofija | Past Producer |
| Medet | Bulgaria | Pazardzhik | Past Producer |
| Assarel | Bulgaria | Pazardzhik | Producer |
| Kassiteres | Greece | Anatoliki Makedonia Kai Thraki | Prospect |
| Bozshakol | Kazakhstan | Pavlodar oblysy | Prospect |
| Santo Tomas II Group | Philippines | Benguet | Prospect |
| Jiama | China | Xizang | Producer |
| Fakos | Greece | Voreio Aigaio | Prospect |
| Xiaoxinancha | China | Jilin | Producer |
| Cerro del Gallo | Mexico | Guanajuato | Occurrence |
| Birgildinskoe | Russian Federation | Chelyabinskaya oblast | Prospect |
| Charlie | Canada | British Columbia | Occurrence |
| Clay | Canada | British Columbia | Occurrence |
| Assarel Group | Bulgaria | Pazardzhik | Producer |
| Kassiteres Group | Greece | Anatoliki Makedonia Kai Thraki | Prospect |
| Site name | Country | State or province | Development |
|---|